Rinnai PA-KIT E (NG) A Series Gas Control Assembly - Genuine Rinnai Spare Get the gas control assembly wrong on a Rinnai A Series and you're looking at a problem that's going to make itself known straight away - wrong combustion, failed fault codes, no ignition, or a water temperature that's all over the place as soon as the demand changes. Now, the gas control assembly is one piece of kit that you can't really afford to get wrong. The PA-KIT E (NG) is the genuine Rinnai gas control assembly for the A Series Infinity - and it's specifically for Natural Gas. What's more, it bundles up the main solenoid valve, the changeover solenoid valves and the modulating valve in one neat little package. Normally, the main solenoid valve will stay open as long as there's flow through the unit, but the gas flow rate is controlled by the modulating valve and the cha